Dionex™ OnGuard™ II Na Cartridges

Remove high levels of alkaline earth and transition metals from sample matrices without acidifying the sample. Thermo Scientific™ Dionex™ OnGuard™ II Na Cartridges are an off-line sample preparation technique that uses 16% cross-linked, styrene-based, sulfonic acid resin in the sodium form to eliminate these matrix interferences to improve IC performance and facilitate low-level ion analysis. Use them singly or in series, or pretreat up to 12 samples in parallel using the optional Dionex OnGuard Sample Prep Station.

This resin has very high selectivity for multivalent cations such as calcium, magnesium, and transition metals.

Solve Tough Application Problems

• Boost sensitivity, lower baselines, and get better separations by removing phenolics, metals, cations, anions, hydrophobic substances, and more
• Achieve reproducible trace-level determinations in concentrated matrices
• Increase the lifetime of your analytical columns
• Use for a wide range of matrices thanks to wide pH stability
• Supports applications with choice of 1cc and 2.5cc formats, as well as syringe barrel format for robotic processing (custom order)

Easy-to-Use, Leak-Free

• Leak-free, no-channeling cartridge
• Quick, secure Luer inlet connections

Performance Guaranteed

• Ships with a Certificate of Analysis that verifies capacity, performance and cleanliness

Pretreat 12 Samples Simultaneously

• Use the optional Dionex OnGuard Sample Prep Station and OnGuard Sample Pretreatment Cartridges